initial fuel cost

基本解释

If they're successful, and many of the initial results suggest that they could be, it will be because the cost of fuel cells has dropped significantly over the last few years.
如果这些公司取得成功（许多初步结果显示可能成功），其原因将归于在最近几年燃料电池价格出现大幅下降。
Although the cost of a solar-powered LED lamp over its lifetime is much less than the cumulative cost of fuel, many people cannot afford the initial $25 to $50 outlay for such a lamp.
尽管LED在使用期限内的花销比煤油少，但很多人不可能花25到50美元去买这样一个灯。

Aging planes are expected to be replaced by more fuel-efficient models, behind the initial cost of the airplane, fuel costs are the second largest cost associated with airplanes.
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Nice thing, no fuel cost, and even after 50 years PV systems will operate at least around 75% of initial capacity.
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